#pragma once
#include "bieuthuc.h"

class HangSo :
	public BieuThuc
{
private :
	float m_giaTri;
public:
	BieuThuc& khoitao(float *x,int i);
	string bieuDien();
	string bieuDienDaoHam();
	float tinhGiaTri(float x);
	float tinhDaoHam(float x);
	HangSo(float );
	HangSo();
	~HangSo();
	
};
